I.C.Z.N. Opinion 270 placed this name on the Official List of Specific Names in Zoology as name no. 91.

In the last half century the names glandon, aquilo, franklinii and rustica have all been applied at the species-level to some or all populations of this complex in North America (e.g., L. Miller and F. Brown (1981), Mem. Lepid. Soc. (2): 127, Ferris (1989), Mem. Lepid. Soc. (3): 35, Opler (1992), Field Guide E. Butts.: 137, (1999), Field Guide W. Butts.: 246). It is unclear whether or not the name aquilo should be applied to the North American fauna. Until a lectotype or neotype for aquilo is designated, this issue will remain problematic. Nekrutenko (1974), J. Lepid. Soc. 28(3): 281, fig. 1, showed that there are no consistent genitalic characteristics by which glandon and aquilo may be separated. Yakovlev and Churkin (2003), Helios 4: 148-152, and Churkin (2005), Helios 5: 3-38, discussed the use of the name glandon for all of these populations. Since no thorough analysis of North American populations has yet been presented, the following arrangement is tentative.

Type Locality: “Arctic Regions”; determined from itineraries in vol. 1 and a letter from John Ross in vol. 2, Addenda: 732-735, to be the area bounded by 69.30 o-70.9o N lat. and 91.52o-93.0o W long., in the vicinity of the isthmus of Boothia Peninsula, named by the expedition. [Kitikmeot-Keewatin regions, Nunavut]